How Did the New Working Class in Postindustrial Society Undermine

How did the new working class in postindustrial society undermine old socioeconomic distinctions?

A) Virtually everyone went to college, so no one could claim superiority on the basis of a better education.
B) Men and women now entered all professions equally, so the idea that certain jobs were "men's work" or "women's work" disappeared.
C) Wealthy people could now take technological jobs for the simple enjoyment of solving complex problems without losing status.
D) Those who performed service work or managerial functions were not necessarily better paid than blue-collar workers.